Static Maps API v2

Now, Google have rewritten the API and are launching the new interface as Static Maps API v2. The main new features are:

• Paths can be specified as encoded polylines. (Issue 205)
• Paths can be filled and rendered as polygons. (Issue 792)
• Locations (in center, markers, or path parameters) can now be specified as addresses instead of latitude/longitude coordinates.
• Colors can now be specified as any 24-bit or 32-bit color.

Source: Google Geo Developers Blog: Static Maps API v2: Encoded Paths, Polygons & Geocoding

To play around with everything right now, try the new Static Maps v2 Wizard.